https://bugs.kde.org/show_bug.cgi?id=413317
--- Comment #5 from wolthera <griffinval...@gmail.com> ---
So... bisecting says that this is the bad commit:
5ccac066cd8d98e655b7d14349dc011205ac096f is the first bad commit
commit 5ccac066cd8d98e655b7d14349dc011205ac096f
Author: Dmitry Kazakov <dimul...@gmail.com>
Date: Mon Sep 16 21:14:41 2019 +0300
Fix wrong borders on EdgeDetection and HeightToNormalMap filters
The color data should be premultiplied by the alpha channel to
get correct result on layers with transparency.
BUG:411922
libs/image/kis_edge_detection_kernel.cpp | 16 ++++++++++++++++
libs/pigment/KoColorSpace.h | 5 +++++
libs/pigment/KoColorSpaceAbstract.h | 5 +++++
.../kis_convert_height_to_normal_map_filter.cpp | 3 ---
.../filters/edgedetection/kis_edge_detection_filter.cpp | 3 ---
5 files changed, 26 insertions(+), 6 deletions(-)
(https://invent.kde.org/graphics/krita/-/commit/5ccac066cd8d98e655b7d14349dc011205ac096f)
I guess premultiplying is what leads to this bug???
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